[SOLVED] J-link RTT Viewer can not display when I use _SEGGER_RTT.aUP[1]

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  • [SOLVED] J-link RTT Viewer can not display when I use _SEGGER_RTT.aUP[1]

    Hi:
    I want same log to display at J-link RTT Viewer channel 0 with _SEGGER_RTT.aUP[0] and same log to display at J-link RTT Viewer channel 1 with _SEGGER_RTT.aUP[1].

    I set

    C Source Code

    1. SEGGER_RTT_MAX_NUM_UP_BUFFERS 2
    2. SEGGER_RTT_MAX_NUM_SOWN_BUFFERS 2

    when I use the following code ,the log can display channel 0 and channel 1.but do not use _SEGGER_RTT.aUP[1]

    C Source Code

    1. SEGGER_RTT_SetTerminal(0);
    2. SEGGER_RTT_Write(0,&ch,1);
    3. ......
    4. SEGGER_RTT_SetTerminal(1);
    5. SEGGER_RTT_Write(0,&ch,1);
    but use SEGGER_RTT_Write(1,&ch,1); the channel 1 do not display anything


    Source Code

    1. SEGGER_RTT_SetTerminal(0);
    2. SEGGER_RTT_Write(0,&ch,1);
    3. ......
    4. SEGGER_RTT_SetTerminal(1);
    5. SEGGER_RTT_Write(1,&ch,1);


    so ,please help me !

    Best regards,

    Bluetooth-BLE
    Bluetooth + NORDIC + SES
  • Hello,

    (Moved thread to J-Link forum)
    Thank you for your inquiry.
    J-Link RTT Viewer can only display output on Channel 0. Channel 1 can only be logged into a file.
    More information can be found in the J-link user manual in section J-Link RTT Viewer.

    If you want to see output on RTT Viewer on more than just Channel 0 the J-Link SDK is required. With the SDK you can write your own Viewer application then without these restrictions.
    segger.com/products/debug-prob…nk/technology/j-link-sdk/

    Best regards,
    Nino
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